Multicolor printing press



F. E. JAMISON MULTICOLOR PRINTING PRESS Filed Oct. 7. 1950 Patented July21, 1931 MULTICOLOR". PRINTING PRESS Application filed ,October 27,1936. Serial No. 491,452.

n j n' 'ipn li e' lt m li c br p n eei t i e r nd h f r. s Pr ary q jsto'pf iice a con tjr ction whe eby" the. print a P a e eI I P e i ed ro3 ,th ifesp ective lcylindei's without adjustment g aha -130i any of theinking rolls or fi ihin sl t I Astillfflirtherobject is' to producelapress at sa p e. s rii ;du end i ely economical construction; and withthese gen} fe al sets in view ot ers as will hereiaartei p ar,the'invention consists in certain and u's eful" features of constructionand oiiibiiiatioiii of parts as hereinafter'described ahdiclaimedfl; andin order that it ma f beifully understood, reference is to be had to theaccompanying drawings, in which Figure 1 is a fragmentary side elevationof a multi-color printing press embodying the invention.

Figure 2 is a plan view of the same.

In the said drawings, where like reference characters identifycorresponding parts in all of the figures, the side frames of the pressconsist of stand members 1, two horizontal top members 2 and cap members3, each bridging a central space between the respective top members andsecuring between them upon the stand members, opposite blocks 4 formingbearings for the shaft 5 of an impression cylinder 6 common to all ofthe form cylinders, as will hereinafter appear, the impression cylinderhaving the customary blanket cover 7, and being driven by power means(not shown) applied to shaft 5 in any conventional or suitable manner.

As shown in the drawings, there are four form cylinders 8 arrangedaround the impression cylinder, the shafts 9 of two of said cylindersbeing journaled in bearings 10 secured to opposite edges of the standmembers 1. The shaft 9 of the other two form cylinders is journaled inbearings 11, mounted on pairs of oppositely inclined arms 12 of the topmembers 2.

It will be noted that more than fifty percent of the peripheral surfacesof the form cylinders are always beyond or outside of adjacent parts'ofthe press and that the plates 12a removably secured therein in pairs, inany suitable or conventional manner, as by a the conventional clamps12b,are accessible withoiit' necessitating the removal orladjus'tment of anypart of the press other rmnesgeung such rotation of the impressioncylinder,and hence of the form cylinders, as to fully exposetherespective plates inthe eyent'fthe operation of. the pressisarrestedwith one of said, lates in a position where it cannot be readiy reached for replacement onotlier piir, poses. t

As a press of this character, of desirable size for printing ,coinic'sections of news? papers, is too high for an attendant, standiiigon thefloor, t ois'elcilr e aiplate orf r move it fronti' position on ,tlietwotopmost r y in if lathe st'iilld m i b provide'cl'withelevatedplatforms, not shown,

upon which 'the' attendant may 'tahdqn stands areneeded as regards thetwo low er "fo'rrncylinders, as they arewithinlconyenient that the]referenc'tolthe height of the press,

Coaxial and rotatable withinafia auge sames peed asand'disposed atoneerid ofthe impression cylinder is alarge gear wheel 13,interme'shi'n'gwit gear wheels 14 c-oairial and rotatable withthe'fo'rm' cylinder s. 4

g Thegvarious mechanisms for supplying ink s or desired colors from therespective inking rollers to the plates on" the forms cylinders, may: beof any suitable or conventional type, connected by trains of 16} (onlyone being shown) tothelarge gear wlieel ofth e I impression cylinder,which gearing requires noadjfustrnent or shifting when aformlrollerplate or plates is to ibe placed in or removed from position, the samestatement ap pliesjt'o the iii-distributing rollers 17' for the transferof ink from the inking rollers to the plates of the respective formcylinders.

The paper web P. encompasses the impression cylinder for the greaterpart of its periphery, and preferably leads to and from the lower partof said cylinder and over guide rollers 18, journaled in the standmemher.

All of the form rollers, are adjustable to ward and from the impressioncylinder to compensate for wear and impression, and the plates thereonare likewise adjustable circiiimferentially, not shown, to insure properand accurate registration of the dili'erent colors printed upon the webas it passes the respective plates. 7 p The conventional and generallyused multi-color presses for newspaper comic sheet printing are tall andexpensive, and all. such presses, as far as I am aware, areobjectionable in that adjustments and replacements of the platesrelative to the form cylinders, not only necessitate the conjointattention of two operators, but adjustment or shifting of parts carryingthe gearing, ink and the distributing rollers, and in the standard typesof such presses such adjustment or shifting operations consume severalhours and during such period the press is idle. lVith the press hereindescribed and shown, permitting change of plates without necessitatingany adjustment to place the plates in proper operative relation, severalhours running time is saved each week. In other words, several thousandmore papers can be printed per day with this press than with presses ofthe type mentioned, running at the same speed. Furthermore theconstruction and size of the press are such that it can be transportedor shipped if necessary, as a single unit, and when shipped inknock-down condition, can be erected or assembled for operation in avery short time and at low cost as compared with the conventional typeof multi-color press for printing comic sheets or supplements fornewspapers.

From the above description, it will be apparent that I have produced amulticolor printing press embodying the features of advantage set forthas desirable in the statement of the objects of the invention, and whichmay be changed in minor particulars without departing from the spiritand scope of the appended claims.

I claim:

1. In a multi-color printing press, comprising a stand member, animpression cylinder supported from and at the upper end of the standmember, oppositely-projecting top members upon the stand member andspaced apart at their inner ends, the top members havingupwardlydiverging arms equi-distant from and at opposite sides of theaxis of the impression cylinder, bearings upon the said arms, formcylinders journaled in said bearings and geared to the impressioncylinder, each form cylinder hearing such relation to the impressioncylinder and to its respective supporting arm as to always makeaccessible more than fifty-percent of its circumference.

2. In a multi-color printing press, a stand member, a pair of topmembers upon and projecting laterally beyond opposite sides of the standmember, bearing blocks upon the stand member and between the topmembers,

a shaft journaled in said blocks, an impresthereof; a set ofink-distributing rollers for engagement with each form cylinder at apoint beyond the said exposed and accessible circumferential areathereof, and means for transmitting power from the impression cyl inderto the ink-distributing rollers.

In testimony whereof I affix my signature.

FRANK E. JAMISON.

